Albert white



(No Model.) 2 Sheets-Sheet 2. A WHITE STAPLE DRIVER.

No. 406,075. Patented July 2,(1889.

"LUI tr] 255515 ZMMWQW NITE STATES PATENT OFFICE.

ALBERT WHITE, OF LOVELL, MASSACHUSETTS, ASSIGNOR TO FREDERICK TAYLOR, OFSAME PLACE.

STAPLENDRNER.

SPECIFICATION forming part Of Letters Patent N0. 406,075, dated July 2,1889.

Application filed June 2l, 1888. Serial No. 277,811. (No model.)

To all whom t may concern:

Be it known that I, ALBERT WHITE, a citizen of the United States,residing at Lowel1,in the county of Middlesex and Commonwealth ofMassachusetts, have invented a certain new and useful Improvement in,Staple-Drivers, of which the following is a specification.

My invention relates to staple-drivers.; and it consists, principally,in means, hereinafter described, for holding said staples, means forfeeding said staples, one at a time, to the plunger, means forpreventing a second `staple from getting under the plunger until thefirst staple Vis discharged, and in the devices and combinationshereinafter described and claimed.

In the accompanying drawings, on two sheets, Figure l is a verticalcentral section of the vertical part of the frame, the knob or handle,and the plunger-lifting spring, and a front elevation of the horizontalarm of the frame, the staple-carrying bar, thespring which retains saidbar in position, the follower, the spring which actuates the follower,the plungemthe spring' which prevents the return of the plunger, and ofstaples arranged on the staple-carrying bar, the middle portion'of thehorizontal arm and staple-carryin g bar being broken out and turnedninety degrees, and shown in cross-section; Fig. 9, a vertical centralsection on the line a: Je in Fig. l; Fig. 3, a left side elevation of apart of the plunger, the upper part of the frame, the spring whichprevents the return of the plunger,an d the lever which disen gages saidspring from the plunger; Fig. l, a perspective view of said lever; Fig.5, a section on the line y y in Fig. l Fig. (i, a rear elevation ofapart of the horizontal arm, staple-carrying bar, and bar-retainingspring, the follower and a part of the cord attached to the same,showing the follower arranged in its retaining-notch; Fig. 7, aperspective view of the spring shown in Fig. G; Fig. 8, a horizontalsection on the line z z in Eig. 2 Fig. 9, a front elevation, and Fig. 10a side elevatiolnof the shoe; Fig. 1l, a right side elevation of theplunger, except the'knob, and of the frame, the follower-cord, and itsactuating-spring; Fig. l2, a rear elevation of the staple-driver, theouter ends of the horizontal arm and stapleca1'rying bar being,`-omitted; Fig. lil, a right side elevation of the lower part of theframe, showing the wiregripping lever; Fig. it, a rear elevation of thelower part of the frame, adjacent parts of the horizontal arm andstaple-carrying bar, and a rear elevation of the wire-gripping lever,the staple-driver in Figs. lf3 and il being shown applied to a wire;Fig. l5, a central vertical section of the vertical part of the frameand an elevation of the plunger, its retaining-spring, a front elevationof a part of the horizontal arm and a part of the staple-carrying bar,staples arranged on said bar, and the follower, the plunger beingdepressed below the staple-carrying bar and held from rising by saidspring or pawl.

The. frame or stock A is provided with a horizontal arm A', formed,preferably, in a separate piece therefrom and riveted or otherwisesecured thereto, the line of division between the two parts being markedr1. (See particularly Figs. l2 and le.)

The plunger B is preferably cylindrical throughout the greater portionl) of its length, the lower portion b of the same being rectangular inhorizontal cross-section and as large as a similar section of the stapleC to Ibe driven thereby, the upper portion of the plunger sliding in avertical hole a in said stock and the lower portion of said plunger inthe rectangular hole c2, arranged vertically in the lower portion of`the stock. Dividing the stock on the line a allows the verticalcontiguous faces of the stock proper and arm A to be the one planeandthe other grooved at a2 toJ receive and fit the rectangular part ofthe plunger. \Vithin the central cavity ai of the frame A a spiralspring S surrounds the plunger and is compressed between the shoulder a*and an annular collar o on said plunger, said collar being adjustable onthe plunger to vary the compression of the spring and being held by aset-screw c, which turns in said collar and vthrusts against saidplunger. A stop a? (represented in the drawings as a screw) limits theupward motion of the plunger, and is so placed as to allow the lower end'of the plunger to rise just above the staplecarrying bar D, hereinafterdescribed. The

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downward movement ofthe plunger is limited by the knob or enlarged headB', secured to the top of the plunger and adjustable thereon, the upperend (Z2 of the plunger being screwthreaded and entering a threaded holeb3 in said head, so that by turning the head on the plunger the lengthof the stroke of the plunger may be varied todetermine the distance towhich a staple driven by a full stroke of the plunger shall project fromthe surface into which it is driven.

` The staple-carrying bar D is a horizontal bar, over which are placedthe staples C, the endof said bar entering a hole (1,8 into the groovea2, and the staples are drawn along toward said groove by a follower F,which straddles the bar D, and is drawn toward the plunger by a spirallspring E, the upper end of which is secured to the vertical part of theframe A and the llower end of which is provided with a ring or eye e,through which is passed a cord F', one end of which is secured to a studor l screw f, driven into said frame below lsaid spring E, and the otherend of which passes through said frame andv is coni.

nected to said follower.

The staple-carrying bar D' is arranged-horizontally below the arm KA',and is supported at'one end in the hole as and at the other end' by aleaf-spring D of the form shown in Fig. 7, one end of which last-namedspring is se cured tothe top of the arm A andthe other end of which isbent under the outer end of the bar D, the spring Vjust -above its lowerend pressing against the outer end of the bar D and being provided withyears d3 d4, which prevent the bar D from, lateral motion. The

innerend of the bar D is rounded or beveled oft' on top at "d5 for adistance sufficient to al'- low the plunger to crowd said bar Dlongitudinally outward. The bar D when the plunger is raised is forcedby the spring D against the plane surface of the main part of the frameA, as shown in Fig. 1, so that there will always be when the bar D isiilled with staples andthe plunger is raised, one staple immediatelybelow the plunger so that depressing the plunger will crowd one stapledownward oif from the inner end-of the bar D and discharge it from thelower end of the frame A. .By pulling the lower end of the spring Doutward the barD may be removed for the purpose of filling it withstaples, and

at such times the follower may be conven' iently held in the dovetailnotch a forlned in the under side of the arm A', the follower beingrst'drawn upward into the outer deeper part of saidv notch a." until theinner end, of the follower can be lifted into the inner shallower partof said notch, against which it will be drawn by the spring E andcord'F, the follower being retained in said notch, owing to the factthat the opening of the notch is narrower than the follower. The springF. and a part of the cord F are concealed and protected by a shield orguard A2, secu red by screws am to the frame A.

In order that a second staple may not getunder the plunger before the'rst staple isl driven or discharged from the staple-driver, the plungeris the staple-carrying bar after the iirst stroke is given to theplunger by notches in the vshank of' said plunger, and by a spring-pawlG, of the form shown in Figs. Vl and 2,'the free end of which isbent`horizontally, passes through a hole' am in the frame, and engagessaid notches, the vertical part of said spring G lying in a groove'a infthe outside of said frame and being held in spring G being bent, asshown at g2, and the The pawl Gis disengagedfrom the notches a by alever, preferably formed of wire, and bent into the form vshown in Figs.3 marked H. The middle of the lever His bent into a loop h, and theparts h Hh2 of the wire or leve' nearest to said loop are bent out fromsaid loop horizontally in'opposite directions and rest in transversegrooves a. inthe side ofthe frame A. The portions of the wire or lever Hnearest the ends of the same are bent so as toflie nearly against thefront and back of said frame at an angle with the plane of said looverpare held in said groove 0.14 by the press- .ure of the spring-pawlG.` It is evident that by depressing the free ends of the lever H theloop h'will be forced against the spring-pawl 'and cause said pawl to bedisengaged from the notches a. and allow the plunger to be raised 'bythe spiral spring, as above de'- iscribed.v Inpractice the verticalpartof the frame A is grasped by the left hand and the plunger is struck bythe right hand, or by a mallet held in the right hand. To avoid in juryof the surface into which the staples are to be driven, a foot'AS,having a large surface, as shown in `Figs.'9 and l0, may be applied tothe lower end of the vertical part of the frame and retained thereon bya set-screw al". The lower end of the frame is provided which it isintended to secure by staples, and 'in order that the wire may be heldtaut a gripping-lever K is pivoted at loto the side of the frame, beinglet into a recess a in said k or upper end of said lever' being bentaround onto thel back side of the frame into a position' to allow of itsbeing grasped by the Ybetween said lower end and theI back side of fromthe lever, the lever is restored to position by the spring k2, arrangedbetween .the handle of the lever and the frame.

I claim as my inventionwith notches, the spring to return .the same, anda spring-pawl ,engaging said notches to prevent the return of saidplunger to its prevented from rising above' said groove, by a cap-screwg', the wire orhead of said screw resting'upon the same.

and 4 and with a transverse groove al, to admit a wire the groove als.Vhen the 1in gers are removed l. The combination of the plungerprovidedh, and the horizontal portions of said le- IOO IIO

frame, iiush with said frame, and the handle fingers of 'the left handto bring the lower end l n of said lever against the wire, which isgrasped J- startingpoinu as and for the purpose specilied.

2. The combination of the frame provided with a staple-guiding grooveand with a hole opening laterally into said groove to admit staples, theplunger provided with a collar, a spring surrounding said plunger withina central cavity, with which said frame is provided, and compressedbetween said collar and a shoulder in said central cavity, said plungerbeing provided .with notches, and a spring-pawl to engage said notchesand prevent said plunger when forced downward from rising above saidhole and admitting a second staple below said plunger, as and' for thepurpose specified.

a. The combination of the frame provided with a staple-guiding grooveand with a hole opening laterally into said groove to admit staples, theplunger provided with a collar, a spring surroundin g said plungerwithin a central cavity, with which said frame is provided, andcompressed between said collar and a shoulder in said central cavity,said plunger being provided with notches, a springpawl to engage saidnotches and prevent said plunger when forced downward from rising abovesaid hole and admitting a second staple below said plunger, and a leverturning on said frame to force said pawl out of said notches to allowsaid plunger to be raised, 'as and for the purpose specified.

l. The combination of the frame, the staplecarrying bar removabletherefrom, and the spring-impelled follower arranged to travel on saidbar, said frame having an arm arranged above said staple-carryin g barand provided with a notch to secure said follower to said frame whilesaid.staplecarrying bar is removed therefrom and to hold said followerin a position to receive said staple-carrying bar when said barisreplaced in said frame, as and for the purpose specified.

5. The combination of the frame, the plunger movable therein, avspringattached to said frame and provided with a loop, a cord one end of whichis attached to said frame and the other end of which is attached to afollower, said follower, and a staple-carrying bar ou which saidfollower travels, said cord passing through said loop to draw saidfollower on said bar toward said plunger to feed staples on said barunder said plunger, as and for the purpose specified.

6. The combination of the frame provided with a horizontal arm and witha hole, a spring secured to the free end of said arm, and astaple-carrying bar adapted to be engaged by said hole and said springand to be held in place thereby, as and for the purpose specified.

7. The combination of the frame provided with a horizontal arm and witha vertical staple-guiding groove and with a hole opening into saidgroove, a staple-carrying bar having the top of its inner end beveledolf, said inner end being adapted to enter said hole and to be heldcentrally therein by staples on said bar, a spring secured to the freeend of said horizontal arm to engage the outer end of saidstaple-carryin g bar, and a plunger moving in said frame at right anglestosaid staple-carrying bar, as and for the purpose specied.

8. In a staple-driver, the combination of the frame provided with agroove to receive the wire to be secured bystaples, and a grippingleverpivoted on said frame within a recess formed in said frame to grasp awire between said lever and the side of said groove, as and for thepurpose specified.

In witness whereof I have signed this specication, in the presence oftwo attesting witnesses, this 12th day of June, A. D. 1888.

ALBERT VHITE.

Vtnesses:

ALBERT M. MooRE, KIRKLEY HYDE.

